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Intermittent prophylactic antibiotics for bronchiectasis.

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Area of Science:

  • Respiratory Medicine
  • Infectious Diseases
  • Clinical Pharmacology

Background:

  • Bronchiectasis is a chronic airway disorder characterized by permanent dilation, recurrent infections, and inflammation.
  • Symptoms like chronic cough and phlegm significantly impact quality of life.
  • Prophylactic antibiotics are recommended for frequent exacerbations, but evidence is limited, and antibiotic resistance is a concern.

Purpose of the Study:

  • To evaluate the safety and efficacy of intermittent prophylactic antibiotic therapy in adults and children with bronchiectasis.
  • To assess the impact on exacerbation frequency and serious adverse events.

Main Methods:

  • Systematic review and meta-analysis of randomized controlled trials (RCTs) of at least three months' duration.
  • Included studies compared intermittent antibiotic regimens (≥14 days on/off) with placebo, usual care, or alternative regimens.
  • Primary outcomes were exacerbation frequency and serious adverse events; secondary outcomes included antibiotic resistance and quality of life.

Main Results:

  • In adults, 14-day on/off ciprofloxacin regimens slightly reduced exacerbation frequency compared to placebo but significantly increased antibiotic resistance.
  • 28-day on/off antibiotic regimens did not reduce overall exacerbation frequency but decreased severe exacerbations; antibiotic resistance risk also increased.
  • No significant differences were found in serious adverse events, lung function, or quality of life between antibiotic and placebo groups.

Conclusions:

  • Intermittent prophylactic antibiotics in adults with bronchiectasis offer a slight reduction in exacerbations but increase antibiotic resistance.
  • The impact of these regimens on children remains unknown due to a lack of studies.
  • Further research is required to determine optimal regimens and address safety and efficacy concerns, particularly regarding antibiotic resistance.